How to fix server file permissions problems for a WordPress install ?

The update failed: Unable to create the folder....

update Failed : Could not create directory.

If you are getting this type of error, chances are that you have a  server file permission issue. Incorrect file and folder permissions can cause errors on your WordPress site during upload, and in other scenarios.

Your  self-hosted WordPress site is installed on a computer, either a server run by your WordPress hosting company, or your local server installed on your own computer. This server has a specific software ( like Apache ) to manage your files and folders.

File and folder permissions tell the server who can read, run, or write files. That's why WordPress needs permissions to manage files and create folders on the server. This is usually automatically setup by most of the hosting company, but in some cases, like on a local server install, or if you need to reinforce the security of your install, you will need to manually change those files and folders permissions.

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